With the best will in the world, I can't explain how this unit can achieve cooling while adhering to the laws of physics. Most of the time, the problem is that there is not dry hot air at the front, but already humid hot air.
And you pour more liquid into it and it's supposed to be pleasantly cool? I don't see how.
But maybe someone can explain this marketing magic to me?
I'd buy a few right away. Thank you.

From a purely physical point of view, yes, at some point the humidity will rise in such a way that we will perceive it as warmer. However, the unit must run for quite a long time until this happens. The unit does not "cool" in the sense that it is not possible to cool a room without a connection to the outside.

In practice this is an upgrade to a fan, when sitting in the airflow I find it pleasantly cool, better than a venti. Since I tend to be warm rather than cold, I can't complain. :)